In a study published this month in the journal Icarus, planetary researchers from the United States and Germany modeled chemical processes in the subsurface ocean of Enceladus, the sixth-largest of Saturn’s moons. Enceladus’ tiger stripes are known to be spewing ice from the moon’s icy interior into space, creating a cloud of fine ice particles over the moon’s south pole and creating Saturn’s mysterious E-ring. Evidence for this has come...